I called tmobile on may 18 2018 and ordered a sim. Tmobile shipped the sims on may 19and I received the sims on May 25 2018. And ported the my lines from a different carrer and activated on May 31 2018. But for some reason Tmobile billed me from May 19 2018 but not from May 31 2018. This is really sneaky from tmobile to charge me from the day they shipped my sim. What is the solution for this?